Bulleye Postmark / Cancel Question

Russ: can I bother you for a Scott# for your series of cancels on the postal stationary envelopes?

Remember, too, that many "box cancels" also did duty as "roller cancels" as shown in these examples:

I did not know that wt1. Thank you. Lately I been sort of studying cancels and reading up on the different types on the US machine cancel forum and also the DC Stamp Club's Slogan cancel write-up. I am finding them as enjoyable as the stamps they adorn but that another topic for another time I suppose? Thank you again.

Here are those links (again) if there is any interest?

D.C. slogan cancels (PDF format)
http://www.dcstampclub.org/pdfs/DC_..._Cancels.pdf

U.S. Machine Cancel Finder site that I find really useful.
http://swansongrp.com/machtest.html